Title:
FLOPPY DISK DEVICE
Document Type and Number:
Japanese Patent JP3678844
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To stably control a geared motor with a low power consumption without a timer.
SOLUTION: A transistor 14 is turned on by an ejecting command signal (a) via an FF circuit 11, a NOR circuit 12 and an OR circuit 13, and the geared motor 15 is excited by a Vcc. When a motor M is rotated at a prescribed angle, a built-in switch SW is turned on, and the transistor 14 is continued to be on by an inverter 16 and a chattering shaping circuit 17. When the motor M is further rotated by a prescribed angle, and the built-in switch SW is turned off, the transistor 14 is turned off, and the rotation of the motor M is stopped. When a medium cannot be ejected out even after exciting the motor M for a fixed time, this excitation is cut off by a cut-off timer 18. During a period of exciting the motor M, an on-signal for a spindle motor is turned off by an OR circuit 19.
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Inventors:
Kano, Ikuo
Application Number:
JP1996000169924
Publication Date:
May 20, 2005
Filing Date:
June 28, 1996
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B17/04; G11B17/043; G11B17/046; G11B17/051; G11B19/10; G11B17/04; G11B19/10; (IPC1-7): G11B17/04
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